Why it works: Pepper and clove match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 17,451 recipes. Both carry ethyl octanoate, which smells fruity, wine. The science ↓
Another Good Receipt Eor Walnut Catsup
Ingredients
Directions
Prepare the walnuts
Bruise the walnuts in a large marble mortar until broken.
Steep the mixture
Place the walnuts in a stone jar with the eschalots, garlic, salt, and vinegar.
Let the mixture stand for 10 days, stirring it morning and night.
Boil, strain and bottle
Strain off the liquid and boil it for 30 minutes with anchovies, black pepper, cloves, and mace.
Skim the mixture, strain it again, and let it cool.
Pour the liquid gently from the sediment into small dry bottles.
Cork the bottles securely and store them in a dry place.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Pepper + clovetop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Clove + macetop 6% of all pairsSmell alikelowCooked together8,400 recipes
Shared aroma: methyleugenol (clove, spice).
-
Garlic + peppertop 8% of all pairsSmell alikemoderateCooked together27,090 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Walnut + clovetop 9% of all pairsSmell alikestrongCooked together1,592 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Garlic + clovetop 10% of all pairsSmell alikemoderateCooked together11,368 recipes
Shared aroma: linalool (floral, citrus).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Green walnuts
- Provide the main flavour and dark colour of the ketchup as they steep.
- Vinegar
- Acts as the preserving liquid and extracts flavour from the walnuts and spices.
- Sea salt
- Draws moisture out and helps preserve the mixture during the long steep.
- Anchovies
- Add savoury depth, adding umami to the finished sauce.
- Eschalots
- Add a sharp aromatic onion flavour that mellows during steeping.
The step that matters
Pour off the liquid gently from the sediment. Sediment left from steeping and boiling can cloud the ketchup and cause spoilage in storage. Pouring slowly keeps the settled solids behind so the bottled liquid stays clear.
Swap the mace
How well each one fits the dish's main ingredients (walnut, garlic, vinegar, pepper, clove):
- Allspicefits better
- Tarragonfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against walnut, garlic, vinegar, pepper, clove. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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